Genuine OEM Audi Engine Breather Coolant Pipe, part number 8W0121081EG. This hose is responsible for transporting coolant within the engine system, playing a vital role in maintaining optimal engine operating temperatures. It connects various components of the cooling system. Constructed from durable, heat-resistant rubber or plastic, it weighs approximately 0.028 kg. Genuine OEM coolant pipes ensure precise routing, correct material composition, and resistance to temperature and pressure fluctuations, preventing leaks and maintaining cooling system integrity.